-LRB- CNN -RRB- Bruce Jenner says he 's cooperating with police as they investigate a fatal car crash involving the reality TV star .

`` My heartfelt and deepest sympathies go out to the family and loved ones , and to all of those who were involved or injured in this terrible accident , '' Jenner said in a statement released Sunday by his publicist , Alan Nierob . `` It is a devastating tragedy , and I can not pretend to imagine what this family is going through at this time . I am praying for them . I will continue to cooperate in every way possible . ''

Jenner earlier told police that paparazzi were chasing him when he was in the wreck , but investigators have said there 's no sign photographers following him played a role in the crash .

`` That is a very regular occurrence , and -LRB- there is -RRB- no indication at this time it was a contributing factor of the crash , '' Los Angeles County Sheriff 's Department Lt. John Lecrivain said .

Authorities have n't determined who was at fault in the Saturday crash , Sgt. Phillip Brooks of the Los Angeles County Sheriff 's Department told CNN Sunday . They also have n't released details about the victim .

Jenner first catapulted to fame after winning the 1976 Olympic decathlon and now draws the celebrity spotlight for his role on the `` Keeping Up With the Kardashians '' reality show .

He was driving a black Cadillac SUV on Saturday that was the third vehicle involved in a multiple rear-end collision , Brooks said .

The first vehicle was a black Toyota Prius , CNN affiliate KCAL reported , citing deputies . Behind it was a white Lexus sedan that also hit its brakes .

Jenner 's Escalade was towing a trailer with an all-terrain vehicle on it when it ran into the Lexus from behind , Brooks said . The Lexus spun into oncoming traffic and was hit by a Hummer H2 . The driver of the Lexus was killed .

Photos published on the TMZ celebrity gossip website purported to show the moment of impact .

No information about the deceased was immediately available . Jenner , 65 , was not injured in the crash , publicist Alan Nierob said .

KCAL reported Jenner 's SUV left skid marks .

The wreck took place shortly after noon on Pacific Coast Highway in Malibu , the Sheriff 's Department said .

The department later opened a vehicular manslaughter investigation , a source close to the case told CNN legal analyst Mark Geragos . The investigation will focus on everyone in the case , not just one person , the source said .

The Sheriff 's Department said on its Facebook page that the surviving drivers were cooperating with investigators .

A deputy said Jenner voluntarily took a field sobriety test , was questioned and went home .

Five children and two adults were hospitalized with injuries , authorities said .

The accident occurred on a tricky stretch of the highway , where the road is narrow and twisting .

In a bizarre twist to the story , a car later drove through safety barriers around the scene and struck two of the cars from the initial accident , Cmdr. Mike Parker of the Sheriff 's Department tweeted . The driver was arrested on suspicion of driving under the influence , Parker wrote .

Jenner won the 1976 Olympic decathlon with a world record score for the 10-discipline event . He quickly capitalized on his success with Wheaties commercials , appearances and other ventures .

He became an actor , appearing in the drama `` CHiPs '' in 1981 and occasionally playing himself on shows such as `` Silver Spoons . ''

More recently , he has gained fame as the well-known stepfather of Khloe , Kim and Kourtney Kardashian on their family 's E! entertainment network reality show .

He and Kris Jenner , the show 's matriarch , divorced last year .

E! said Jenner was not shooting for `` Keeping Up with the Kardashians '' on the day of the accident .

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CNN 's Rachel Wells , AnneClaire Stapleton , Janet DiGiacomo , Rachel Wells , Paul Vercammen , Paul Matadeen , Christie Bear , Vivian Kuo and Catherine E. Shoichet contributed to this report .

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`` I will continue to cooperate in every way possible , '' Bruce Jenner says in a statement

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The reality TV star 's SUV hit a car and pushed it into the path of an oncoming Hummer , authorities say

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Investigators say there 's no sign paparazzi following Bruce Jenner played a role in the crash